Lewis Short
(adjective) : nĕc-ŏpīnus (also separately, nĕc ŏpīnus), a, um, (poet).
* Pass., unexpected: necopina mors,Ov. M. 1, 224: ictus,Stat. Th. 6, 778: pericula,Sil. 14, 188; Aus. Grat. Act. ad Grat. 12.—*
* Act., not expecting, unsuspecting, careless: ipsum accipiter necopinum rapit,Phaedr. 1, 9, 6; occultā necopinum (hostem) perde sagittā,Ov. M. 12, 596.
Charlton T. Lewis, Charles Short, A Latin Dictionary